Paper Title:
Preparation of Submicron-Sized Hydroxyapatite Powders by Spray Pyrolysis
  Abstract

Dense and submicron-sized hydroxyapatite powders were synthesized through spray pyrolysis of calcium phosphate solution with polyethylene glycol (PEG). Irregular shaped and fragile hydroxyapatite aggregates, and spherical and hollow hydroxyapatite particles were obtained after spray pyrolysis at 1100 °C when using calcium phosphate solution with and without PEG, respectively. After dewaxing at 650 °C for 3 hours, the hydroxyapatite aggregates were broken into submicron-sized particles whereas micron-sized spherical hollow particles were almost intact. The relative densities of hydroxyapatite disks made by submicron and micron sized hydroxyapatite particles were about 90% and 81%, respectively, after sintering at 1110 °C for 3 hours. The results were explained in terms of the disintegrating function of carbon which was previously formed among the hydroxyapatite aggregates by the decomposition of PEG during spray pyrolysis.

  Info
Periodical
Key Engineering Materials (Volumes 493-494)
Main Theme
Edited by
Eyup Sabri Kayali, Gultekin Goller and Ipek Akin
Pages
215-218
DOI
10.4028/www.scientific.net/KEM.493-494.215
Citation
J. S. Cho, S. H. Rhee, "Preparation of Submicron-Sized Hydroxyapatite Powders by Spray Pyrolysis", Key Engineering Materials, Vols. 493-494, pp. 215-218, 2012
Online since
October 2011
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Price
$32.00
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